The Company and Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended			9 Months Ended		1 Months Ended	9 Months Ended		3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2013	Sep. 30, 2012	Jul. 31, 2010 8.75% Senior Secured First Lien Notes [Member]	Sep. 30, 2013 8.75% Senior Secured First Lien Notes [Member]	Jul. 27, 2010 8.75% Senior Secured First Lien Notes [Member]	Dec. 31, 2012 Notes Payable to Banks [Member]	Jun. 30, 2012 Notes Payable to Banks [Member]	Sep. 30, 2013 Restricted Stock [Member]	Sep. 30, 2013 Restricted Stock [Member] Minimum [Member]	Sep. 30, 2013 Restricted Stock [Member] Maximum [Member]	Sep. 30, 2013 Univision [Member]	Sep. 30, 2012 Univision [Member]	Sep. 30, 2013 Univision [Member]	Sep. 30, 2012 Univision [Member]	Sep. 30, 2013 Unimas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Expiry year of long-term affiliation agreements																2021
Renewal period of affiliation agreements																2 years
Affiliate advertising minutes per hour for which entity has right to sell																6 minutes		4 minutes 30 seconds
Payment of sales representation fees to television stations														$ 2,600,000	$ 2,800,000	$ 7,600,000	$ 7,500,000
Period to grant television station for terms of retransmission consent agreements																6 years
Retransmission consent agreements expiring date																2014-12
Amount due from television stations for carriage														6,600,000		6,600,000
Common stock percentage held by Univision														10.00%		10.00%
Stock-based compensation expense related to grants of stock options and restricted stock units	1,300,000	800,000		3,518,000	1,763,000
Amortization period of stock-based compensation expense												1 year	4 years
Unrecognized compensation expense related to grants of stock options	4,100,000			4,100,000
Weighted-average period for unrecognized compensation expense				1 year 6 months							9 months 18 days
Unrecognized compensation expense related to grants of restricted stock units											200,000
Weighted average shares outstanding of diluted securities, not included for diluted income per share	2,451,894	9,104,987		1,736,783	8,666,586
Interest rate of notes							8.75%	8.75%
Aggregate principal amount of Senior Secured First Lien Notes								400,000,000
Issuance price as percentage of principal amount								98.722%
Notes maturity date							Aug. 01, 2017
Net proceeds received from the sale of the Notes				375,000,000		388,000,000
Discount on bond							5,000,000
Fees for sale of notes							7,000,000
Principal amount repurchased	324,000,000		16,200,000	324,000,000					40,000,000	20,000,000
Gain (loss) on debt extinguishment	$ (29,404,000)		$ (400,000)	$ (29,534,000)	$ (1,230,000)				$ (2,500,000)	$ (1,200,000)
Redemption price for the redeemed notes									103.00%	103.00%